libmpcodecs/vf.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5 #include "config.h"
   6 #if HAVE_MALLOC_H
   7 #include <malloc.h>
   8 #endif
   9
  10 #ifdef MP_DEBUG
  11 #include <assert.h>
  12 #endif
  13
  14 #include "mp_msg.h"
  15 #include "help_mp.h"
  16 #include "m_option.h"
  17 #include "m_struct.h"
  18
  19
  20 #include "img_format.h"
  21 #include "mp_image.h"
  22 #include "vf.h"
  23
  24 #include "libvo/fastmemcpy.h"
  25
  26 extern const vf_info_t vf_info_vo;
  27 extern const vf_info_t vf_info_rectangle;
  28 extern const vf_info_t vf_info_bmovl;
  29 extern const vf_info_t vf_info_crop;
  30 extern const vf_info_t vf_info_expand;
  31 extern const vf_info_t vf_info_pp;
  32 extern const vf_info_t vf_info_scale;
  33 extern const vf_info_t vf_info_format;
  34 extern const vf_info_t vf_info_noformat;
  35 extern const vf_info_t vf_info_yuy2;
  36 extern const vf_info_t vf_info_flip;
  37 extern const vf_info_t vf_info_rgb2bgr;
  38 extern const vf_info_t vf_info_rotate;
  39 extern const vf_info_t vf_info_mirror;
  40 extern const vf_info_t vf_info_palette;
  41 extern const vf_info_t vf_info_lavc;
  42 extern const vf_info_t vf_info_zrmjpeg;
  43 extern const vf_info_t vf_info_dvbscale;
  44 extern const vf_info_t vf_info_cropdetect;
  45 extern const vf_info_t vf_info_test;
  46 extern const vf_info_t vf_info_noise;
  47 extern const vf_info_t vf_info_yvu9;
  48 extern const vf_info_t vf_info_lavcdeint;
  49 extern const vf_info_t vf_info_eq;
  50 extern const vf_info_t vf_info_eq2;
  51 extern const vf_info_t vf_info_halfpack;
  52 extern const vf_info_t vf_info_dint;
  53 extern const vf_info_t vf_info_1bpp;
  54 extern const vf_info_t vf_info_2xsai;
  55 extern const vf_info_t vf_info_unsharp;
  56 extern const vf_info_t vf_info_swapuv;
  57 extern const vf_info_t vf_info_il;
  58 extern const vf_info_t vf_info_fil;
  59 extern const vf_info_t vf_info_boxblur;
  60 extern const vf_info_t vf_info_sab;
  61 extern const vf_info_t vf_info_smartblur;
  62 extern const vf_info_t vf_info_perspective;
  63 extern const vf_info_t vf_info_down3dright;
  64 extern const vf_info_t vf_info_field;
  65 extern const vf_info_t vf_info_denoise3d;
  66 extern const vf_info_t vf_info_hqdn3d;
  67 extern const vf_info_t vf_info_detc;
  68 extern const vf_info_t vf_info_telecine;
  69 extern const vf_info_t vf_info_tinterlace;
  70 extern const vf_info_t vf_info_tfields;
  71 extern const vf_info_t vf_info_ivtc;
  72 extern const vf_info_t vf_info_ilpack;
  73 extern const vf_info_t vf_info_dsize;
  74 extern const vf_info_t vf_info_decimate;
  75 extern const vf_info_t vf_info_softpulldown;
  76 extern const vf_info_t vf_info_pullup;
  77 extern const vf_info_t vf_info_filmdint;
  78 extern const vf_info_t vf_info_framestep;
  79 extern const vf_info_t vf_info_tile;
  80 extern const vf_info_t vf_info_delogo;
  81 extern const vf_info_t vf_info_remove_logo;
  82 extern const vf_info_t vf_info_hue;
  83 extern const vf_info_t vf_info_spp;
  84 extern const vf_info_t vf_info_uspp;
  85 extern const vf_info_t vf_info_fspp;
  86 extern const vf_info_t vf_info_pp7;
  87 extern const vf_info_t vf_info_yuvcsp;
  88 extern const vf_info_t vf_info_kerndeint;
  89 extern const vf_info_t vf_info_rgbtest;
  90 extern const vf_info_t vf_info_qp;
  91 extern const vf_info_t vf_info_phase;
  92 extern const vf_info_t vf_info_divtc;
  93 extern const vf_info_t vf_info_harddup;
  94 extern const vf_info_t vf_info_softskip;
  95 extern const vf_info_t vf_info_screenshot;
  96 extern const vf_info_t vf_info_ass;
  97 extern const vf_info_t vf_info_mcdeint;
  98 extern const vf_info_t vf_info_yadif;
  99 extern const vf_info_t vf_info_blackframe;
 100 extern const vf_info_t vf_info_geq;
 101 extern const vf_info_t vf_info_ow;
 102
 103 // list of available filters:
 104 static const vf_info_t* const filter_list[]={
 105     &vf_info_rectangle,
 106 #ifdef HAVE_POSIX_SELECT
 107     &vf_info_bmovl,
 108 #endif
 109     &vf_info_crop,
 110     &vf_info_expand,
 111 #ifdef CONFIG_LIBPOSTPROC
 112     &vf_info_pp,
 113 #endif
 114     &vf_info_scale,
 115 //    &vf_info_osd,
 116     &vf_info_vo,
 117     &vf_info_format,
 118     &vf_info_noformat,
 119     &vf_info_yuy2,
 120     &vf_info_flip,
 121     &vf_info_rgb2bgr,
 122     &vf_info_rotate,
 123     &vf_info_mirror,
 124     &vf_info_palette,
 125     &vf_info_pp7,
 126 #ifdef CONFIG_LIBAVCODEC
 127     &vf_info_lavc,
 128     &vf_info_lavcdeint,
 129     &vf_info_screenshot,
 130 #endif
 131 #ifdef CONFIG_ZR
 132     &vf_info_zrmjpeg,
 133 #endif
 134     &vf_info_dvbscale,
 135     &vf_info_cropdetect,
 136     &vf_info_test,
 137     &vf_info_noise,
 138     &vf_info_yvu9,
 139     &vf_info_eq,
 140     &vf_info_eq2,
 141     &vf_info_halfpack,
 142     &vf_info_dint,
 143     &vf_info_1bpp,
 144     &vf_info_2xsai,
 145     &vf_info_unsharp,
 146     &vf_info_swapuv,
 147     &vf_info_il,
 148     &vf_info_fil,
 149     &vf_info_boxblur,
 150     &vf_info_sab,
 151     &vf_info_smartblur,
 152     &vf_info_perspective,
 153     &vf_info_down3dright,
 154     &vf_info_field,
 155     &vf_info_denoise3d,
 156     &vf_info_hqdn3d,
 157     &vf_info_detc,
 158     &vf_info_telecine,
 159     &vf_info_tinterlace,
 160     &vf_info_tfields,
 161     &vf_info_ivtc,
 162     &vf_info_ilpack,
 163     &vf_info_dsize,
 164     &vf_info_decimate,
 165     &vf_info_softpulldown,
 166     &vf_info_pullup,
 167     &vf_info_filmdint,
 168     &vf_info_framestep,
 169     &vf_info_tile,
 170     &vf_info_delogo,
 171     &vf_info_remove_logo,
 172     &vf_info_hue,
 173 #ifdef CONFIG_LIBAVCODEC_A
 174     &vf_info_spp,
 175     &vf_info_uspp,
 176     &vf_info_fspp,
 177     &vf_info_qp,
 178     &vf_info_mcdeint,
 179     &vf_info_geq,
 180 #endif
 181     &vf_info_yuvcsp,
 182     &vf_info_kerndeint,
 183     &vf_info_rgbtest,
 184     &vf_info_phase,
 185     &vf_info_divtc,
 186     &vf_info_harddup,
 187     &vf_info_softskip,
 188 #ifdef CONFIG_ASS
 189     &vf_info_ass,
 190 #endif
 191     &vf_info_yadif,
 192     &vf_info_blackframe,
 193     &vf_info_ow,
 194     NULL
 195 };
 196
 197 // For the vf option
 198 const m_obj_list_t vf_obj_list = {
 199   (void**)filter_list,
 200   M_ST_OFF(vf_info_t,name),
 201   M_ST_OFF(vf_info_t,info),
 202   M_ST_OFF(vf_info_t,opts)
 203 };
 204
 205 //============================================================================
 206 // mpi stuff:
 207
 208 void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h){
 209     int y;
 210     if(mpi->flags&MP_IMGFLAG_PLANAR){
 211         y0&=~1;h+=h&1;
 212         if(x0==0 && w==mpi->width){
 213             // full width clear:
 214             memset(mpi->planes[0]+mpi->stride[0]*y0,0,mpi->stride[0]*h);
 215             memset(mpi->planes[1]+mpi->stride[1]*(y0>>mpi->chroma_y_shift),128,mpi->stride[1]*(h>>mpi->chroma_y_shift));
 216             memset(mpi->planes[2]+mpi->stride[2]*(y0>>mpi->chroma_y_shift),128,mpi->stride[2]*(h>>mpi->chroma_y_shift));
 217         } else
 218         for(y=y0;y<y0+h;y+=2){
 219             memset(mpi->planes[0]+x0+mpi->stride[0]*y,0,w);
 220             memset(mpi->planes[0]+x0+mpi->stride[0]*(y+1),0,w);
 221             memset(mpi->planes[1]+(x0>>mpi->chroma_x_shift)+mpi->stride[1]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 222             memset(mpi->planes[2]+(x0>>mpi->chroma_x_shift)+mpi->stride[2]*(y>>mpi->chroma_y_shift),128,(w>>mpi->chroma_x_shift));
 223         }
 224         return;
 225     }
 226     // packed:
 227     for(y=y0;y<y0+h;y++){
 228         unsigned char* dst=mpi->planes[0]+mpi->stride[0]*y+(mpi->bpp>>3)*x0;
 229         if(mpi->flags&MP_IMGFLAG_YUV){
 230             unsigned int* p=(unsigned int*) dst;
 231             int size=(mpi->bpp>>3)*w/4;
 232             int i;
 233 #ifdef WORDS_BIGENDIAN
 234 #define CLEAR_PACKEDYUV_PATTERN 0x00800080
 235 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x80008000
 236 #else
 237 #define CLEAR_PACKEDYUV_PATTERN 0x80008000
 238 #define CLEAR_PACKEDYUV_PATTERN_SWAPPED 0x00800080
 239 #endif
 240             if(mpi->flags&MP_IMGFLAG_SWAPPED){
 241                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 242                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN_SWAPPED;
 243             } else {
 244                 for(i=0;i<size-3;i+=4) p[i]=p[i+1]=p[i+2]=p[i+3]=CLEAR_PACKEDYUV_PATTERN;
 245                 for(;i<size;i++) p[i]=CLEAR_PACKEDYUV_PATTERN;
 246             }
 247         } else
 248             memset(dst,0,(mpi->bpp>>3)*w);
 249     }
 250 }
 251
 252 mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h){
 253   mp_image_t* mpi=NULL;
 254   int w2;
 255   int number = mp_imgtype >> 16;
 256
 257 #ifdef MP_DEBUG
 258   assert(w == -1 || w >= vf->w);
 259   assert(h == -1 || h >= vf->h);
 260   assert(vf->w > 0);
 261   assert(vf->h > 0);
 262 #endif
 263
 264 //  fprintf(stderr, "get_image: %d:%d, vf: %d:%d\n", w,h,vf->w,vf->h);
 265
 266   if (w == -1) w = vf->w;
 267   if (h == -1) h = vf->h;
 268
 269   w2=(mp_imgflag&MP_IMGFLAG_ACCEPT_ALIGNED_STRIDE)?((w+15)&(~15)):w;
 270
 271   if(vf->put_image==vf_next_put_image){
 272       // passthru mode, if the filter uses the fallback/default put_image() code
 273       return vf_get_image(vf->next,outfmt,mp_imgtype,mp_imgflag,w,h);
 274   }
 275
 276   // Note: we should call libvo first to check if it supports direct rendering
 277   // and if not, then fallback to software buffers:
 278   switch(mp_imgtype & 0xff){
 279   case MP_IMGTYPE_EXPORT:
 280     if(!vf->imgctx.export_images[0]) vf->imgctx.export_images[0]=new_mp_image(w2,h);
 281     mpi=vf->imgctx.export_images[0];
 282     break;
 283   case MP_IMGTYPE_STATIC:
 284     if(!vf->imgctx.static_images[0]) vf->imgctx.static_images[0]=new_mp_image(w2,h);
 285     mpi=vf->imgctx.static_images[0];
 286     break;
 287   case MP_IMGTYPE_TEMP:
 288     if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 289     mpi=vf->imgctx.temp_images[0];
 290     break;
 291   case MP_IMGTYPE_IPB:
 292     if(!(mp_imgflag&MP_IMGFLAG_READABLE)){ // B frame:
 293       if(!vf->imgctx.temp_images[0]) vf->imgctx.temp_images[0]=new_mp_image(w2,h);
 294       mpi=vf->imgctx.temp_images[0];
 295       break;
 296     }
 297   case MP_IMGTYPE_IP:
 298     if(!vf->imgctx.static_images[vf->imgctx.static_idx]) vf->imgctx.static_images[vf->imgctx.static_idx]=new_mp_image(w2,h);
 299     mpi=vf->imgctx.static_images[vf->imgctx.static_idx];
 300     vf->imgctx.static_idx^=1;
 301     break;
 302   case MP_IMGTYPE_NUMBERED:
 303     if (number == -1) {
 304       int i;
 305       for (i = 0; i < NUM_NUMBERED_MPI; i++)
 306         if (!vf->imgctx.numbered_images[i] || !vf->imgctx.numbered_images[i]->usage_count)
 307           break;
 308       number = i;
 309     }
 310     if (number < 0 || number >= NUM_NUMBERED_MPI) return NULL;
 311     if (!vf->imgctx.numbered_images[number]) vf->imgctx.numbered_images[number] = new_mp_image(w2,h);
 312     mpi = vf->imgctx.numbered_images[number];
 313     mpi->number = number;
 314     break;
 315   }
 316   if(mpi){
 317     mpi->type=mp_imgtype;
 318     mpi->w=vf->w; mpi->h=vf->h;
 319     // keep buffer allocation status & color flags only:
 320 //    mpi->flags&=~(MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE|MP_IMGFLAG_DIRECT);
 321     mpi->flags&=MP_IMGFLAG_ALLOCATED|MP_IMGFLAG_TYPE_DISPLAYED|MP_IMGFLAGMASK_COLORS;
 322     // accept restrictions & draw_slice flags only:
 323     mpi->flags|=mp_imgflag&(MP_IMGFLAGMASK_RESTRICTIONS|MP_IMGFLAG_DRAW_CALLBACK);
 324     if(!vf->draw_slice) mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
 325     if(mpi->width!=w2 || mpi->height!=h){
 326 //      printf("vf.c: MPI parameters changed!  %dx%d -> %dx%d   \n", mpi->width,mpi->height,w2,h);
 327         if(mpi->flags&MP_IMGFLAG_ALLOCATED){
 328             if(mpi->width<w2 || mpi->height<h){
 329                 // need to re-allocate buffer memory:
 330                 free(mpi->planes[0]);
 331                 mpi->flags&=~MP_IMGFLAG_ALLOCATED;
 332                 mp_msg(MSGT_VFILTER,MSGL_V,"vf.c: have to REALLOCATE buffer memory :(\n");
 333             }
 334 //      } else {
 335         } {
 336             mpi->width=w2; mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 337             mpi->height=h; mpi->chroma_height=(h + (1<<mpi->chroma_y_shift) - 1)>>mpi->chroma_y_shift;
 338         }
 339     }
 340     if(!mpi->bpp) mp_image_setfmt(mpi,outfmt);
 341     if(!(mpi->flags&MP_IMGFLAG_ALLOCATED) && mpi->type>MP_IMGTYPE_EXPORT){
 342
 343         // check libvo first!
 344         if(vf->get_image) vf->get_image(vf,mpi);
 345
 346         if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
 347           // non-direct and not yet allocated image. allocate it!
 348           if (!mpi->bpp) { // no way we can allocate this
 349               mp_msg(MSGT_DECVIDEO, MSGL_FATAL,
 350                      "vf_get_image: Tried to allocate a format that can not be allocated!\n");
 351               return NULL;
 352           }
 353
 354           // check if codec prefer aligned stride:
 355           if(mp_imgflag&MP_IMGFLAG_PREFER_ALIGNED_STRIDE){
 356               int align=(mpi->flags&MP_IMGFLAG_PLANAR &&
 357                          mpi->flags&MP_IMGFLAG_YUV) ?
 358                          (8<<mpi->chroma_x_shift)-1 : 15; // -- maybe FIXME
 359               w2=((w+align)&(~align));
 360               if(mpi->width!=w2){
 361                   // we have to change width... check if we CAN co it:
 362                   int flags=vf->query_format(vf,outfmt); // should not fail
 363                   if(!(flags&3)) mp_msg(MSGT_DECVIDEO,MSGL_WARN,"??? vf_get_image{vf->query_format(outfmt)} failed!\n");
 364 //                printf("query -> 0x%X    \n",flags);
 365                   if(flags&VFCAP_ACCEPT_STRIDE){
 366                       mpi->width=w2;
 367                       mpi->chroma_width=(w2 + (1<<mpi->chroma_x_shift) - 1)>>mpi->chroma_x_shift;
 368                   }
 369               }
 370           }
 371
 372           // IF09 - allocate space for 4. plane delta info - unused
 373           if (mpi->imgfmt == IMGFMT_IF09)
 374           {
 375              mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*(mpi->height+2)/8+
 376                                         mpi->chroma_width*mpi->chroma_height);
 377              /* export delta table */
 378              mpi->planes[3]=mpi->planes[0]+(mpi->width*mpi->height)+2*(mpi->chroma_width*mpi->chroma_height);
 379           }
 380           else
 381              mpi->planes[0]=memalign(64, mpi->bpp*mpi->width*(mpi->height+2)/8);
 382           if(mpi->flags&MP_IMGFLAG_PLANAR){
 383               // YV12/I420/YVU9/IF09. feel free to add other planar formats here...
 384               //if(!mpi->stride[0])
 385               mpi->stride[0]=mpi->width;
 386               //if(!mpi->stride[1])
 387               if(mpi->num_planes > 2){
 388               mpi->stride[1]=mpi->stride[2]=mpi->chroma_width;
 389               if(mpi->flags&MP_IMGFLAG_SWAPPED){
 390                   // I420/IYUV  (Y,U,V)
 391                   mpi->planes[1]=mpi->planes[0]+mpi->width*mpi->height;
 392                   mpi->planes[2]=mpi->planes[1]+mpi->chroma_width*mpi->chroma_height;
 393               } else {
 394                   // YV12,YVU9,IF09  (Y,V,U)
 395                   mpi->planes[2]=mpi->planes[0]+mpi->width*mpi->height;
 396                   mpi->planes[1]=mpi->planes[2]+mpi->chroma_width*mpi->chroma_height;
 397               }
 398               } else {
 399                   // NV12/NV21
 400                   mpi->stride[1]=mpi->chroma_width;
 401                   mpi->planes[1]=mpi->planes[0]+mpi->width*mpi->height;
 402               }
 403           } else {
 404               //if(!mpi->stride[0])
 405               mpi->stride[0]=mpi->width*mpi->bpp/8;
 406           }
 407 //        printf("clearing img!\n");
 408           vf_mpi_clear(mpi,0,0,mpi->width,mpi->height);
 409           mpi->flags|=MP_IMGFLAG_ALLOCATED;
 410         }
 411     }
 412     if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
 413         if(vf->start_slice) vf->start_slice(vf,mpi);
 414     if(!(mpi->flags&MP_IMGFLAG_TYPE_DISPLAYED)){
 415             mp_msg(MSGT_DECVIDEO,MSGL_V,"*** [%s] %s%s mp_image_t, %dx%dx%dbpp %s %s, %d bytes\n",
 416                   vf->info->name,
 417                   (mpi->type==MP_IMGTYPE_EXPORT)?"Exporting":
 418                   ((mpi->flags&MP_IMGFLAG_DIRECT)?"Direct Rendering":"Allocating"),
 419                   (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)?" (slices)":"",
 420                   mpi->width,mpi->height,mpi->bpp,
 421                   (mpi->flags&MP_IMGFLAG_YUV)?"YUV":((mpi->flags&MP_IMGFLAG_SWAPPED)?"BGR":"RGB"),
 422                   (mpi->flags&MP_IMGFLAG_PLANAR)?"planar":"packed",
 423                   mpi->bpp*mpi->width*mpi->height/8);
 424             mp_msg(MSGT_DECVIDEO,MSGL_DBG2,"(imgfmt: %x, planes: %p,%p,%p strides: %d,%d,%d, chroma: %dx%d, shift: h:%d,v:%d)\n",
 425                 mpi->imgfmt, mpi->planes[0], mpi->planes[1], mpi->planes[2],
 426                 mpi->stride[0], mpi->stride[1], mpi->stride[2],
 427                 mpi->chroma_width, mpi->chroma_height, mpi->chroma_x_shift, mpi->chroma_y_shift);
 428             mpi->flags|=MP_IMGFLAG_TYPE_DISPLAYED;
 429     }
 430
 431   mpi->qscale = NULL;
 432   }
 433   mpi->usage_count++;
 434 //    printf("\rVF_MPI: %p %p %p %d %d %d    \n",
 435 //      mpi->planes[0],mpi->planes[1],mpi->planes[2],
 436 //      mpi->stride[0],mpi->stride[1],mpi->stride[2]);
 437   return mpi;
 438 }
 439
 440 //============================================================================
 441
 442 // By default vf doesn't accept MPEGPES
 443 static int vf_default_query_format(struct vf_instance* vf, unsigned int fmt){
 444   if(fmt == IMGFMT_MPEGPES) return 0;
 445   return vf_next_query_format(vf,fmt);
 446 }
 447
 448 vf_instance_t* vf_open_plugin(struct MPOpts *opts, const vf_info_t* const* filter_list, vf_instance_t* next, const char *name, char **args){
 449     vf_instance_t* vf;
 450     int i;
 451     for(i=0;;i++){
 452         if(!filter_list[i]){
 453             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CouldNotFindVideoFilter,name);
 454             return NULL; // no such filter!
 455         }
 456         if(!strcmp(filter_list[i]->name,name)) break;
 457     }
 458     vf = calloc(1, sizeof *vf);
 459     vf->opts = opts;
 460     vf->info=filter_list[i];
 461     vf->next=next;
 462     vf->config=vf_next_config;
 463     vf->control=vf_next_control;
 464     vf->query_format=vf_default_query_format;
 465     vf->put_image=vf_next_put_image;
 466     vf->default_caps=VFCAP_ACCEPT_STRIDE;
 467     vf->default_reqs=0;
 468     if(vf->info->opts) { // vf_vo get some special argument
 469       const m_struct_t* st = vf->info->opts;
 470       void* vf_priv = m_struct_alloc(st);
 471       int n;
 472       for(n = 0 ; args && args[2*n] ; n++)
 473         m_struct_set(st,vf_priv,args[2*n],args[2*n+1]);
 474       vf->priv = vf_priv;
 475       args = NULL;
 476     } else // Otherwise we should have the '_oldargs_'
 477       if(args && !strcmp(args[0],"_oldargs_"))
 478         args = (char**)args[1];
 479       else
 480         args = NULL;
 481     if(vf->info->open(vf,(char*)args)>0) return vf; // Success!
 482     free(vf);
 483     mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CouldNotOpenVideoFilter,name);
 484     return NULL;
 485 }
 486
 487 vf_instance_t* vf_open_filter(struct MPOpts *opts, vf_instance_t* next, const char *name, char **args){
 488   if(args && strcmp(args[0],"_oldargs_")) {
 489     int i,l = 0;
 490     for(i = 0 ; args && args[2*i] ; i++)
 491       l += 1 + strlen(args[2*i]) + 1 + strlen(args[2*i+1]);
 492     l += strlen(name);
 493     {
 494       char str[l+1];
 495       char* p = str;
 496       p += sprintf(str,"%s",name);
 497       for(i = 0 ; args && args[2*i] ; i++)
 498         p += sprintf(p," %s=%s",args[2*i],args[2*i+1]);
 499       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter "[%s]\n",str);
 500     }
 501   } else if(strcmp(name,"vo")) {
 502     if(args && strcmp(args[0],"_oldargs_") == 0)
 503       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter
 504              "[%s=%s]\n", name,args[1]);
 505     else
 506       mp_msg(MSGT_VFILTER,MSGL_INFO,MSGTR_OpeningVideoFilter
 507              "[%s]\n", name);
 508   }
 509   return vf_open_plugin(opts, filter_list,next,name,args);
 510 }
 511
 512 /**
 513  * \brief adds a filter before the last one (which should be the vo filter).
 514  * \param vf start of the filter chain.
 515  * \param name name of the filter to add.
 516  * \param args argument list for the filter.
 517  * \return pointer to the filter instance that was created.
 518  */
 519 vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args) {
 520   struct MPOpts *opts = (*vf)->opts;
 521   vf_instance_t *vo, *prev = NULL, *new;
 522   // Find the last filter (should be vf_vo)
 523   for (vo = *vf; vo->next; vo = vo->next)
 524     prev = vo;
 525   new = vf_open_filter(opts, vo, name, args);
 526   if (prev)
 527     prev->next = new;
 528   else
 529     *vf = new;
 530   return new;
 531 }
 532
 533 //============================================================================
 534
 535 unsigned int vf_match_csp(vf_instance_t** vfp,const unsigned int* list,unsigned int preferred){
 536     vf_instance_t* vf=*vfp;
 537     struct MPOpts *opts = vf->opts;
 538     const unsigned int* p;
 539     unsigned int best=0;
 540     int ret;
 541     if((p=list)) while(*p){
 542         ret=vf->query_format(vf,*p);
 543         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 544         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 545         if(ret&1 && !best) best=*p; // best with conversion
 546         ++p;
 547     }
 548     if(best) return best; // bingo, they have common csp!
 549     // ok, then try with scale:
 550     if(vf->info == &vf_info_scale) return 0; // avoid infinite recursion!
 551     vf=vf_open_filter(opts, vf,"scale",NULL);
 552     if(!vf) return 0; // failed to init "scale"
 553     // try the preferred csp first:
 554     if(preferred && vf->query_format(vf,preferred)) best=preferred; else
 555     // try the list again, now with "scaler" :
 556     if((p=list)) while(*p){
 557         ret=vf->query_format(vf,*p);
 558         mp_msg(MSGT_VFILTER,MSGL_V,"[%s] query(%s) -> %d\n",vf->info->name,vo_format_name(*p),ret&3);
 559         if(ret&2){ best=*p; break;} // no conversion -> bingo!
 560         if(ret&1 && !best) best=*p; // best with conversion
 561         ++p;
 562     }
 563     if(best) *vfp=vf; // else uninit vf  !FIXME!
 564     return best;
 565 }
 566
 567 void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){
 568     dst->pict_type= src->pict_type;
 569     dst->fields = src->fields;
 570     dst->qscale_type= src->qscale_type;
 571     if(dst->width == src->width && dst->height == src->height){
 572         dst->qstride= src->qstride;
 573         dst->qscale= src->qscale;
 574     }
 575 }
 576
 577 void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *))
 578 {
 579     vf->continue_buffered_image = func;
 580 }
 581
 582 // Output the next buffered image (if any) from the filter chain.
 583 // The queue could be kept as a simple stack/list instead avoiding the
 584 // looping here, but there's currently no good context variable where
 585 // that could be stored so this was easier to implement.
 586
 587 int vf_output_queued_frame(vf_instance_t *vf)
 588 {
 589     while (1) {
 590         int ret;
 591         vf_instance_t *current;
 592         vf_instance_t *last=NULL;
 593         int (*tmp)(vf_instance_t *);
 594         for (current = vf; current; current = current->next)
 595             if (current->continue_buffered_image)
 596                 last = current;
 597         if (!last)
 598             return 0;
 599         tmp = last->continue_buffered_image;
 600         last->continue_buffered_image = NULL;
 601         ret = tmp(last);
 602         if (ret)
 603             return ret;
 604     }
 605 }
 606
 607
 608 /**
 609  * \brief Video config() function wrapper
 610  *
 611  * Blocks config() calls with different size or format for filters
 612  * with VFCAP_CONSTANT
 613  *
 614  * First call is redirected to vf->config.
 615  *
 616  * In following calls, it verifies that the configuration parameters
 617  * are unchanged, and returns either success or error.
 618  *
 619 */
 620 int vf_config_wrapper(struct vf_instance* vf,
 621                     int width, int height, int d_width, int d_height,
 622                     unsigned int flags, unsigned int outfmt)
 623 {
 624     int r;
 625     if ((vf->default_caps&VFCAP_CONSTANT) && vf->fmt.have_configured) {
 626         if ((vf->fmt.orig_width != width)
 627             || (vf->fmt.orig_height != height)
 628             || (vf->fmt.orig_fmt != outfmt)) {
 629             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_ResolutionDoesntMatch);
 630             return 0;
 631         }
 632         return 1;
 633     }
 634     vf->fmt.have_configured = 1;
 635     vf->fmt.orig_height = height;
 636     vf->fmt.orig_width = width;
 637     vf->fmt.orig_fmt = outfmt;
 638     r = vf->config(vf, width, height, d_width, d_height, flags, outfmt);
 639     if (!r) vf->fmt.have_configured = 0;
 640     return r;
 641 }
 642
 643 int vf_next_config(struct vf_instance* vf,
 644         int width, int height, int d_width, int d_height,
 645         unsigned int voflags, unsigned int outfmt){
 646     struct MPOpts *opts = vf->opts;
 647     int miss;
 648     int flags=vf->next->query_format(vf->next,outfmt);
 649     if(!flags){
 650         // hmm. colorspace mismatch!!!
 651         // let's insert the 'scale' filter, it does the job for us:
 652         vf_instance_t* vf2;
 653         if(vf->next->info==&vf_info_scale) return 0; // scale->scale
 654         vf2=vf_open_filter(opts, vf->next,"scale",NULL);
 655         if(!vf2) return 0; // shouldn't happen!
 656         vf->next=vf2;
 657         flags=vf->next->query_format(vf->next,outfmt);
 658         if(!flags){
 659             mp_msg(MSGT_VFILTER,MSGL_ERR,MSGTR_CannotFindColorspace);
 660             return 0; // FAIL
 661         }
 662     }
 663     mp_msg(MSGT_VFILTER,MSGL_V,"REQ: flags=0x%X  req=0x%X  \n",flags,vf->default_reqs);
 664     miss=vf->default_reqs - (flags&vf->default_reqs);
 665     if(miss&VFCAP_ACCEPT_STRIDE){
 666         // vf requires stride support but vf->next doesn't support it!
 667         // let's insert the 'expand' filter, it does the job for us:
 668         vf_instance_t* vf2=vf_open_filter(opts, vf->next,"expand",NULL);
 669         if(!vf2) return 0; // shouldn't happen!
 670         vf->next=vf2;
 671     }
 672     vf->next->w = width; vf->next->h = height;
 673     return vf_config_wrapper(vf->next,width,height,d_width,d_height,voflags,outfmt);
 674 }
 675
 676 int vf_next_control(struct vf_instance* vf, int request, void* data){
 677     return vf->next->control(vf->next,request,data);
 678 }
 679
 680 int vf_next_query_format(struct vf_instance* vf, unsigned int fmt){
 681     int flags=vf->next->query_format(vf->next,fmt);
 682     if(flags) flags|=vf->default_caps;
 683     return flags;
 684 }
 685
 686 int vf_next_put_image(struct vf_instance* vf,mp_image_t *mpi, double pts){
 687     return vf->next->put_image(vf->next,mpi, pts);
 688 }
 689
 690 void vf_next_draw_slice(struct vf_instance* vf,unsigned char** src, int * stride,int w, int h, int x, int y){
 691     if (vf->next->draw_slice) {
 692         vf->next->draw_slice(vf->next,src,stride,w,h,x,y);
 693         return;
 694     }
 695     if (!vf->dmpi) {
 696         mp_msg(MSGT_VFILTER,MSGL_ERR,"draw_slice: dmpi not stored by vf_%s\n", vf->info->name);
 697         return;
 698     }
 699     if (!(vf->dmpi->flags & MP_IMGFLAG_PLANAR)) {
 700         memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+vf->dmpi->bpp/8*x,
 701             src[0], vf->dmpi->bpp/8*w, h, vf->dmpi->stride[0], stride[0]);
 702         return;
 703     }
 704     memcpy_pic(vf->dmpi->planes[0]+y*vf->dmpi->stride[0]+x, src[0],
 705         w, h, vf->dmpi->stride[0], stride[0]);
 706     memcpy_pic(vf->dmpi->planes[1]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[1]+(x>>vf->dmpi->chroma_x_shift),
 707         src[1], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[1], stride[1]);
 708     memcpy_pic(vf->dmpi->planes[2]+(y>>vf->dmpi->chroma_y_shift)*vf->dmpi->stride[2]+(x>>vf->dmpi->chroma_x_shift),
 709         src[2], w>>vf->dmpi->chroma_x_shift, h>>vf->dmpi->chroma_y_shift, vf->dmpi->stride[2], stride[2]);
 710 }
 711
 712 //============================================================================
 713
 714 vf_instance_t *append_filters(vf_instance_t* last,
 715                               struct m_obj_settings *vf_settings)
 716 {
 717   struct MPOpts *opts = last->opts;
 718   vf_instance_t* vf;
 719   int i;
 720
 721   if(vf_settings) {
 722     // We want to add them in the 'right order'
 723     for(i = 0 ; vf_settings[i].name ; i++)
 724       /* NOP */;
 725     for(i-- ; i >= 0 ; i--) {
 726       //printf("Open filter %s\n",vf_settings[i].name);
 727       vf = vf_open_filter(opts, last,vf_settings[i].name,vf_settings[i].attribs);
 728       if(vf) last=vf;
 729     }
 730   }
 731   return last;
 732 }
 733
 734 //============================================================================
 735
 736 void vf_uninit_filter(vf_instance_t* vf){
 737     if(vf->uninit) vf->uninit(vf);
 738     free_mp_image(vf->imgctx.static_images[0]);
 739     free_mp_image(vf->imgctx.static_images[1]);
 740     free_mp_image(vf->imgctx.temp_images[0]);
 741     free_mp_image(vf->imgctx.export_images[0]);
 742     free(vf);
 743 }
 744
 745 void vf_uninit_filter_chain(vf_instance_t* vf){
 746     while(vf){
 747         vf_instance_t* next=vf->next;
 748         vf_uninit_filter(vf);
 749         vf=next;
 750     }
 751 }